Is Manifold Mouse legal in Standard, Modern, and Commander?

Manifold Mouse is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Manifold Mouse

Q: What type of card is Manifold Mouse?

Manifold Mouse is a Creature — Mouse Soldier. Its oracle text reads: "Offspring {2} (You may pay an additional {2} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.) At the beginning of combat on your turn, target Mouse you control gains your choice of double strike or trample until end of turn."